21493840 (number)
21493840 is an even 8-digits composite number following 21493839 and preceding 21493841. In scientific notation, it is written as 2.1493840 × 10^7. The sum of its digits is 31. It has a total of 7 prime factors and 40 positive divisors. There are 8386560 positive integers (up to 21493840) that are relatively prime to 21493840.
Interesting facts
- 21493840 has 40 divisors, whose sum is 51199848
- The reverse of 21493840 is 04839412
- Previous prime number is 41
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 31
- Digital Root 4
Name
| Name | twenty-one million four hundred ninety-three thousand eight hundred forty |
|---|
Notation
| Scientific notation | 2.1493840 × 10^7 |
|---|---|
| Engineering notation | 2.1493840 × 10^6 |
Prime Factorization of 21493840
Prime Factorization 2 × 2 × 2 × 2 × 5 × 41 × 6553
Composite number| ω | Distinct Factors | 4 | Total number of distinct prime factors |
|---|---|---|---|
| Ω | Total Factors | 7 | Total number of prime factors |
| rad | Radical | 2686730 | Product of the distinct prime numbers |
The prime factorization of 21493840 is 2 × 2 × 2 × 2 × 5 × 41 × 6553. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 21493840)
Multiplication
n×y| n×2 | 42987680 |
|---|---|
| n×3 | 64481520 |
| n×4 | 85975360 |
| n×5 | 107469200 |
Division
n÷y| n÷2 | 10746920 |
|---|---|
| n÷3 | 7164613.3333333 |
| n÷3 | 5373460 |
| n÷5 | 4298768 |
Exponentiation
ny| n2 | 461985157945600 |
|---|---|
| n3 | 9.9298350672575E+21 |
| n4 | 2.1343028616202E+29 |
| n5 | 4.5874364219207E+36 |
Nth Root
y√n| 2√n | 4636.1449502793 |
|---|---|
| 3√n | 278.03832951482 |
| 4√n | 68.089242544467 |
| 5√n | 29.272701376255 |
Divisors of 21493840
40 divisors
| τ | Total Divisors | 40 | Total number of the positive divisors of n |
|---|---|---|---|
| σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
| s | Aliquot Sum | -21493839 | Sum of the proper positive divisors of n |
| A | Arithmetic Mean | 0.025 | Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) |
| G | Geometric Mean | 1 | Returns the nth root of the product of n divisors |
| H | Harmonic Mean | 40 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 21493840 can be divided by 40 positive divisors. The sum of these divisors (counting 21493840) is 1, the average is 0.025.
Base conversion 21493840
| Base | System | Value |
|---|---|---|
| 2 | Binary | 1010001111111100001010000 |
| 3 | Ternary | 1111110000000011 |
| 4 | Quaternary | 1101333201100 |
| 5 | Quinary | 21000300330 |
| 6 | Senary | 2044404304 |
| 8 | Octal | 121774120 |
| 10 | Decimal | 21493840 |
| 12 | Duodecimal | 7246694 |
| 16 | Hexadecimal | 147f850 |
| 20 | Vigesimal | 6e6ec0 |
| 36 | Base36 | csor4 |
Cryptographic Hash Functions
| md5 | a21779134d6fa8f067cf914dd3f8f20a |
|---|---|
| sha1 | 8e49de355438e32ee51e772f1afe11422709094c |
| sha256 | 60554e17d18fdd6f018b25188e7f81ec057e555b8fa8deef2ff8a77f979fef7e |
| sha512 | 483d2a644828660e07e38522cc6e953e1d014635ab6cf6bc01dcae140f68b7221f74867fb6a563efa1fca3b07d2fae4f5e90be0e78fb76c883d23eb3ac3789d4 |
| ripemd-160 | 5aaeefc0db4f98f8f65ad075b3cc456da249785e |
21493840 as geometric shapes
Circle
Radius = n| Diameter | 42987680 |
|---|---|
| Circumference | 135049779.68287 |
| Area | 1.4513691782694E+15 |
Sphere
Radius = n| Volume | 4.1593995864872E+22 |
|---|---|
| Surface area | 5.8054767130777E+15 |
| Circumference | 135049779.68287 |
Square
Length = n| Perimeter | 85975360 |
|---|---|
| Area | 461985157945600 |
| Diagonal | 30396880.035477 |
Cube
Length = n| Surface area | 2771910947673600 |
|---|---|
| Volume | 9.9298350672575E+21 |
| Space diagonal | 37228422.929756 |
Equilateral Triangle
Length = n| Perimeter | 64481520 |
|---|---|
| Area | 2.0004544147613E+14 |
| Altitude | 18614211.464878 |
Triangular Pyramid
Length = n| Surface area | 2.0004544147613E+14 |
|---|---|
| Volume | 1.1702422853536E+21 |
| Height | 10132293.345159 |